Ramps onto interstates 41 and 894 northbound at Greenfield Avenue, Lincoln Avenue, National Avenue and Highway 100 will also close.

Construction on northbound lanes of the two interstates will be finished by the fall.

DOT Project Manager Mark Klipstein said the work -- which includes new storm sewers and concrete pavement -- has to be done.

The main reasons behind shutting down the four onramps is to reduce the number of vehicles entering a construction zone and diverting them to choose an alternate route, especially during peak travel times during the workweek, he said.

“If we get 30 percent diversion, we may drop additional delays down to 10-15 minutes,” Klipstein said. “But if we don't get the diversion, it will be longer delays. It's going to get a little chaotic, I bet.”

For the Department of Transportation's guide to alternate routes during Zoo Interchange construction, click here.

For a complete list of construction projects and closures in the Milwaukee area, click here.